Embedded Prep

Tutorials

  • Linux Device Driver Interview Questions Complete Roadmap

    1. Linux & Kernel Fundamentals Basic 2. Linux Device Driver Fundamentals Important APIs Know why, when and how each is used. 3. Character Device Driver This is one of the highest-priority interview areas. Questions 4. Device Driver Registration Know the complete sequence. Character driver Interview questions: 5. Kernel Module Programming Prepare these very well. 6.…

  • Embedded Linux + Yocto Interview Questions

    PART 1 – Embedded Linux Fundamentals Beginner PART 2 – Embedded Linux Architecture PART 3 – Boot Process Extremely Important Expected: PART 4 – Linux Kernel Basics PART 5 – Linux Device Tree Must Know mean? PART 6 – Linux Device Drivers PART 7 – Interrupts PART 8 – Synchronization PART 9 – Linux Memory…

  • Linux System Programming – Complete Interview Question Bank

    1. Linux System Programming Fundamentals Basic Concepts 2. Processes This is one of the most important interview areas. Process Basics 3. fork() Coding Questions Interviewers may ask: How many times will this code execute? 4. exec() Know all of these: Questions: 5. Process Termination 6. wait() / waitpid() 7. File Descriptors This is extremely important…

  • ArduPilot Complete Setup Guide (2026): Installing ArduPilot, Mission Planner Setup & First Autonomous Flight

    Getting started with ArduPilot can feel overwhelming when you see terms like firmware, parameters, IMU calibration, GPS, flight modes, and autonomous missions all at once. The good news is that you don’t need to understand everything before your first flight. This guide walks through the process in a practical order: install ArduPilot, connect the vehicle…

  • Setting Up Your Dev Environment for Drone Programming: The Complete Guide

    Learn how to set up your dev environment for drone programming step by step. Python, VSCode, MAVSDK, DroneKit, PX4, ArduPilot, simulators and more. If you’ve ever watched a drone glide autonomously through the air, navigate obstacles, or execute a precise waypoint mission and thought “I want to build that software” this guide is exactly where…

  • Linux Watchdog Driver: The Complete Beginner’s Guide (2024)

    Learn how the Linux watchdog driver works, how to write one, configure /dev/watchdog, use ioctl commands, and set up the watchdog daemon. Code included. 1. What Is a Watchdog Driver in Linux? Imagine you have a robot that is supposed to check in with you every 30 seconds. If it stops checking in, you assume…

  • How to Develop a Platform Driver From Scratch

    Learn platform driver development from scratch with this beginner-friendly guide. Covers Linux platform drivers, probe functions, Device Tree binding, real code examples, and debugging tips. No fluff, just working code. 1. What Is a Platform Driver and Why Should You Care? Let’s start with the honest version, not the textbook one. When you plug in…

  • Difference Between Class, Interface and Templates in C++ Explained

    Learn the difference between Class, Interface, and Templates in C++ with simple explanations and examples. A complete beginner-friendly guide to understand core OOP concepts and improve your coding skills. Let’s be honest. When you first start learning C++, you hit a wall at some point. Maybe it was pointers. Maybe it was memory management. But…

  • What is Friend Function in C++

    Master friend function in C++ with syntax, examples, encapsulation, operator overloading, friend class, inheritance & top interview questions. Beginner to advanced. So you have been writing C++ for a while, you understand classes, private members, and the whole idea of keeping your data safe inside objects. And then someone mentions friend function and suddenly it feels like…

  • C++ Access Specifiers, Encapsulation & Abstraction

    Learn C++ Access Specifiers, Encapsulation, and Abstraction with clear examples and explanations. Master data hiding, OOP concepts, and improve your coding skills with this beginner-friendly guide. If you’re learning C++ and you’ve reached Object-Oriented Programming, three concepts are going to follow you everywhere: access specifiers, encapsulation, and abstraction. They show up in interviews. They show…

  • C++ Constructors and Destructors: The Complete Guide from Beginner to Advanced

    Learn C++ Constructors and Destructors from scratch. Covers types, syntax, memory management, virtual destructors, and real interview questions. Perfect for beginners. If you have ever wondered how a C++ object gets its initial values the moment it is created, or how memory gets cleaned up the moment an object dies you are about to understand…

  • Inheritance in C++

    Learn Inheritance in C++ with simple examples, syntax, types, and access specifiers. A complete beginner to advanced guide for interviews and exams. Inheritance in C++ is an Object-Oriented Programming (OOP) concept where one class (called the derived class) acquires the properties and behavior (variables and functions) of another class (called the base class). In simple…

  • What is Polymorphism?

    Learn polymorphism in object-oriented programming (OOP) with clear examples and easy explanations. Understand method overloading, method overriding, runtime and compile-time polymorphism, and how they improve code flexibility, reusability, and scalability. Polymorphism is a fundamental concept in object-oriented programming (OOP) that allows a single function, method, or interface to perform different behaviors depending on the object…

  • Choosing Your First Drone Platform : The Complete Beginner’s Guide

    Choosing your first drone platform made easy. Compare features, costs, flight control systems, and use cases to pick the perfect drone for beginners. So you’ve decided you want a drone. Maybe you watched a friend’s aerial footage on YouTube and your jaw dropped. Maybe you hiked somewhere stunning and wished you had a camera in…

  • Complete Linux Block Device Driver Project: Kernel Driver + Userspace Access Program

    Complete Linux Block Device Driver Project tutorial covering kernel module development and userspace access program. Learn how to build, register, and test a block device driver in Linux with step-by-step code examples, real-world concepts, and performance insights for beginners and advanced developers. This is a complete, working project. By the end of this guide you…

  • Linux Block Device Drivers : The Complete Beginner’s Guide

    Learn Linux block device drivers from scratch how they work, how to write one, request queues, bio structures, blk-mq, and real kernel code examples. The most complete beginner guide you’ve ever wondered how your Linux system actually talks to a hard disk, an SSD, or even a RAM-based virtual disk block device drivers are the…

  • Linux Character Driver from Scratch (Beginner to Pro)

    Learn how to build a Linux Character Driver from scratch with this beginner-friendly guide. Step-by-step tutorial covering kernel modules, file operations, device files, and real-world driver examples. If you’ve ever wanted to understand how Linux actually talks to hardware, learning a Linux Character Driver is one of the best places to start. This guide is…

  • Understanding PID Control Explained: The Complete Beginner’s Guide to How It Actually Works

    Learn how PID control works Proportional, Integral, and Derivative explained simply with real examples, tuning methods, and code. Perfect for beginners. If you’ve ever wondered how a car cruise control stays locked at exactly 100 km/h on a hilly road, or how a drone hovers perfectly still in a gusty breeze, or how your home…

  • Flight Physics Basics Explained: How Airplanes Really Fly (And Why It’s Cooler Than You Think)

    A beginner’s complete guide to lift, drag, thrust, weight, Bernoulli’s principle, Newton’s laws, angle of attack, and everything else that keeps a 900,000-pound metal tube in the sky. Picture this. You’re sitting in seat 24B, pressed back as the engines roar. The ground blurs outside the window, and then somehow hundreds of tonnes of metal…

  • Drone Anatomy for Programmers Explained: The Complete Beginner’s Guide to Understanding Every Component

    Learn drone anatomy for programmers explained from scratch motors, ESCs, flight controllers, sensors, MAVLink, and PID loops all explained in plain language so your code actually makes sense. If you have ever stared at a drone and thought “I want to program this thing, but I have no idea what I am looking at” this…

  • Types of Drones Explained: Your Complete Beginner’s Guide for 2026

    Types of drones explained for beginners quadcopter, hexacopter, fixed-wing, VTOL, and FPV racing drones. Learn use cases, pros, cons, and which drone to buy. So you’ve decided you want a drone. Maybe you saw some insane aerial footage on YouTube. Maybe your neighbor pulled one out at a family gathering and you thought, “I want…

  • How to Build a Raspberry Pi Powered Drone from Scratch

    Learn how to build a Raspberry Pi powered drone from scratch with full Python code, wiring diagrams, PID tuning, and a step-by-step beginner guide. Here’s the honest truth: building a Raspberry Pi powered drone is not the cheapest or easiest way to get something flying. You can buy a ready-to-fly drone for $50 on Amazon. So why…

  • Building a Quadcopter Drone: The Complete Beginner’s Guide (Step-by-Step)

    Learn how to build a quadcopter drone from scratch with this complete step-by-step guide. Covers parts list, wiring, Betaflight setup, ESC calibration, cost breakdown, and beginner mistakes to avoid. Start building today. So you’ve been watching FPV videos on YouTube at 2 AM, your jaw dropping every time a drone slices through a forest at…

  • Claude AI + Raspberry Pi 5: Control Your IoT with AI (Complete Beginner’s Guide 2025)

    Learn how to use Claude AI with Raspberry Pi 5 to build smart IoT projects. Step-by-step guide covering API setup, GPIO control, sensor data analysis, and real home automation projects perfect for beginners. So here’s the thing. You’ve got a Raspberry Pi 5 sitting on your desk, maybe still in the box, or maybe running…

  • Top Python Interview Questions and Answers

    Preparing for a Python interview? Get the most complete list of Python interview questions and answers for freshers and experienced developers. Clear, practical, and updated for 2025. Introduction So you’ve got a Python interview coming up and you’re not sure where to start. Maybe you’ve been coding in Python for a few months. Maybe you’ve…

  • How to Write an I2C Linux Device Driver Using Raspberry Pi

    So you want to write an I2C Linux device driver on a Raspberry Pi. Good choice. This is one of those topics that sounds intimidating at first but once you see the big picture, everything clicks into place fast. By the time you finish reading this, you will know how I2C works at the protocol…

  • How to Write a Network Driver in Linux: A Beginner’s Complete Guide

    Learn how to write a network driver in Linux from scratch. This beginner-friendly guide covers kernel modules, net_device, sk_buff, ndo operations, and everything you need to build your first Linux network driver. If you’ve ever wondered what happens between the moment your application sends data and the moment it actually leaves your NIC (network interface…

  • How to Develop a Linux LCD Device Driver (Beginner Friendly, Practical Guide)

    Learn how to develop a Linux LCD Device Driver from scratch. Step-by-step guide covering DRM, device tree, SPI, TFT panels, and embedded Linux boards. If you’ve ever powered up an embedded Linux board and wondered how pixels magically appear on the LCD, you’re in the right place. In this guide, we’ll walk step by step…

  • Bluetooth Driver: 10 Proven Steps to Write a Powerful and Reliable Driver from Scratch

    Bluetooth driver guide for beginners and developers. Learn how to write a Bluetooth driver, add Bluetooth drivers, check Bluetooth version, support Bluetooth ver5.0, and build drivers for Windows and Android step by step. If you’ve ever wondered how to write Bluetooth driver code from scratch, you’re not alone. Bluetooth looks simple on the surface. You…

  • How to Write an I2C Driver in Linux: Master Complete Beginner-Friendly Guide

    This guide walks you through writing an I2C driver in Linux from scratch. Whether you are a beginner touching Linux kernel driver development for the first time or preparing for an embedded systems interview, you will find practical code, clear explanations, and real-world context here. What Is an I2C Driver and Why Does It Matter?…

  • SPI Driver Development Guide: Master Linux SPI Driver, Code in C & Architecture Explained (2026)

    Learn how to write an SPI Driver from scratch. Step-by-step guide to Linux SPI driver, SPI controller driver, SPI device driver, SPI driver code in C, and Raspberry Pi SPI driver development. If you’ve ever connected a sensor, display, ADC, DAC, or flash chip to a microcontroller or Linux board, you’ve already stepped into the…

  • QNX SDP 8.0: A Complete Beginner-Friendly Guide (What It Is, What’s New, and Why It Matters)

    Learn what QNX SDP 8.0 is, how it works, key differences between QNX 7 and 8, installation steps, download guide, documentation, release notes, and free non-commercial access explained clearly for beginners. If you’re getting into embedded systems, automotive software, real-time operating systems, or safety-critical platforms, you will run into QNX sooner or later. And right…

  • What Is a Hypervisor? 7 Powerful Reasons Every Beginner Must Understand It in 2026

    If you’ve ever wondered how one physical computer can run Windows, Linux, and Android at the same time, the answer usually comes down to one word: hypervisor. Hypervisors quietly power data centers, cloud platforms like AWS, Android emulators, enterprise virtualization stacks, and even your local laptop when you run virtual machines. Yet for something so…

  • Master How to Write Platform Devices and Drivers (2026)

    Learn how to write Platform Devices and Drivers from scratch using Device Tree, I2C, interrupts, and testing, explained clearly for beginners. If you are stepping into Linux device driver development, sooner or later you will hear one phrase again and again: Platform Devices and Drivers.They sound complex at first, but once you understand the flow,…

  • Master How to Count Duplicates in a Linked List (2026)

    Learn how to count duplicates in a linked list in C++ with this beginner-friendly guide. Step-by-step explanation, easy-to-understand code, and tips for detecting duplicate nodes efficiently. Linked lists are one of the fundamental data structures in programming. While they are simple to understand, performing operations like counting duplicates can be tricky for beginners. In this…

  • Must Know Queue Interview Questions | FIFO Data Structure Explained for Coding Success (2026)

    Discover the most common Queue interview questions and answers. Learn FIFO concepts, types of queues, real-world applications, and essential tips to excel in coding interviews. A queue is one of the most fundamental data structures in computer science, yet it is often underestimated. Unlike stacks or arrays, queues are built around a very simple, intuitive…

  • Master Most Asked Stack Coding Questions in Interviews (With Patterns & Tricks 2026)

    Master the most asked Stack Coding Questions with this complete list of beginner to advanced problems. Perfect for coding interviews and placements. Stack interview questions are among the most frequently asked problems in coding interviews, especially for product-based companies and FAANG roles. A stack follows the LIFO (Last In, First Out) principle and is heavily…

  • Drone Programming: Master How to Learn Drone Programming from Scratch (2026)

    Learn drone programming step by step with this beginner-friendly guide. Understand drone coding, Python, DJI drones, FPV learning, simulators, and real-world drone skills. If you are curious about drone programming, you are already ahead of most people. Drones are no longer just flying toys. They are used in photography, videography, agriculture, mapping, delivery, defense, and…

  • Master Linked List Coding Questions (2026)

    Learn Basic Linked List Coding Questions with simple explanations and beginner-friendly code examples. Perfect for students and interview preparation. Basic Linked List Coding Questions are designed to help beginners master one of the most fundamental data structures in programming. A linked list is a collection of nodes where each node contains data and a reference…

  • Operating System Syllabus: Master Beginner-Friendly Guide with Concepts, Examples, and Real-World Insight (2026)

    Learn the complete operating system syllabus in a beginner-friendly way. Covers processes, memory, scheduling, file systems, Linux, Windows, and real-world examples. his guide covers the operating system syllabus in a clear, structured, and beginner-friendly way, designed for students who want real understanding, not just exam answers. It explains how an operating system works behind the…

  • Pointer Practice Questions: 30 Must-Know Powerful Problems for Guaranteed Success

    Pointer Practice questions in C and C++ with clear explanations, memory concepts, and real coding examples. Perfect for beginners and interview prep. Pointer Practice Questions are designed to help beginners and intermediate programmers master pointers step by step. This collection includes easy to advanced pointer questions with clear explanations, real coding logic, and common interview-based…

  • Difference Between CPLD and FPGA: Master Architecture, Use Cases, and Real-World Comparison (2026)

    Learn the difference between CPLD and FPGA with clear explanations, architecture comparison, VLSI use cases, and CPLD vs FPGA vs ASIC insights. What is the difference between CPLD and FPGA? At first glance, CPLDs and FPGAs look similar. Both are programmable logic devices. Both replace piles of discrete logic ICs. Both are widely used in…

  • How Linux Boots? Master Linux Booting Process (2026)

    Learn How Linux Boots process step by step, from power on to login. Beginner-friendly explanation with clear stages and real examples. If you’ve ever wondered what happens when you press the power button on a Linux machine, you’re not alone. The Linux booting process can seem mysterious at first, but once you break it down,…

  • Master FPGA Interview Questions & Answers for FPGA Engineer (2026)

    FPGA Interview Questions explained clearly for beginners and experienced engineers. Learn Verilog, RTL design, timing, debugging, and real FPGA interview answers. This detailed guide on FPGA Interview Questions is written for beginners as well as experienced FPGA engineers who want to crack real-world interviews with confidence. Instead of giving short, memorized answers, the article explains…

  • Master LIN Interview Questions (2026) | Practical Automotive Embedded Interview Guide

    Master LIN Interview Questions with clear, real-world explanations. Learn LIN basics, automotive use cases, and interview-ready concepts explained simply. If you are preparing for an automotive embedded interview, LIN Interview Questions almost always show up. Especially if the role involves body electronics, comfort systems, or low-cost ECUs. LIN looks simple on the surface, but interviewers…

  • Master GPIO Interview Questions 2026 | Crack Embedded Jobs Fast

    Learn GPIO interview questions guide covering input, output, pull-up, pull-down, interrupts, real debugging questions, and why interviewers ask GPIO questions. GPIO stands for General Purpose Input Output. It is one of the most basic and important features of any microcontroller or processor. GPIO pins allow a chip to interact with the real world. Without GPIO,…

  • Master Microcontroller Interview Questions (2026)

    Learn Master Microcontroller Interview Questions for microcontrollers and STM32F407VG with this complete guide. Explore embedded systems, IoT projects, programming, debugging, and hands-on applications. Perfect for beginners, students, and professionals looking to boost skills and career in embedded electronics. You’ll find questions on STM32, and other microcontrollers, including topics like GPIO, timers, interrupts, ADC/DAC, UART, SPI,…

  • Master Microprocessor Interview Questions (2026)

    Master Microprocessor Interview Questions with this comprehensive guide covering beginner to senior-level MPU concepts, interrupts, pipelining, memory management, and embedded systems. Perfect for freshers, experienced engineers, and embedded professionals preparing for interviews. Microprocessors are the heart of modern computing and embedded systems, making them a critical topic for technical interviews, especially for embedded software engineers.…

  • Master LDD Interview Questions (2026)

    LDD interview questions with clear answers for freshers and experienced engineers. Covers character drivers, platform drivers, device tree, and kernel basics. Preparing for a Linux Device Driver interview can feel overwhelming, especially when questions go deep into kernel internals, memory management, and hardware interaction. This curated collection of Linux Device Driver (LDD) Interview Questions is…

  • Platform Devices and Drivers on Linux

    Learn Platform Devices and Drivers in Linux from scratch with clear explanations, device tree examples, driver code, testing steps, and real-world insights. If you are getting into Linux device drivers, especially embedded Linux, you will keep hearing one phrase again and again: Platform Devices and Drivers. At first, it sounds complicated. Platform bus, platform_device, platform_driver,…

  • Master QNX Boot Process Interview Question Explained (2026)

    Learn the complete QNX Boot Process: IPL, Startup Code, IFS, SLM & Boot Manager explained step-by-step for embedded system interviews. Understanding the QNX boot process is a must if you’re preparing for embedded or automotive interviews. In this video, we break down the complete QNX boot flow step by step from power-on to application launch…

  • Master QNX OS Interview Questions and Answer 2026

    QNX OS interview questions and answers for 2026, explained in simple language. Covers microkernel architecture, IPC, scheduling, resource managers, and real-time concepts for embedded and automotive engineers. This collection of QNX OS interview questions and answers is designed for engineers who want to truly understand QNX, not just memorize definitions. The questions are written in…

  • Master Arduino Interview Questions (Beginner to Experienced) : 2026

    Top Arduino interview questions for beginners to experienced engineers. Covers concepts, debugging, projects, and real-world applications. Arduino is one of the most widely used embedded platforms for learning, prototyping, and even production-grade solutions. Because of its simplicity and flexibility, Arduino-based questions are commonly asked in embedded software interviews, electronics interviews, and IoT roles. This article…

  • QNX OS Interview Questions 2026 : Complete Guide from Beginner to Advanced

    Complete QNX OS interview guide with beginner to advanced questions on RTOS, IPC, scheduling, drivers, debugging, and automotive systems. QNX is widely used in safety-critical and real-time embedded systems such as automotive infotainment, ADAS, medical devices, and industrial automation. Preparing for a QNX interview requires much more than memorizing basic RTOS concepts it demands a…

  • Master MCU Peripheral Interview Questions 2026 : Beginner to Advanced

    Prepare for MCU interviews with our complete 2026 guide on MCU Peripheral Interview Questions. Covering GPIO, ADC, DAC, Timers, UART, SPI, I2C, PWM, CAN, RTC, Watchdog, DMA, and more for beginners and experts. If you are preparing for an embedded systems or MCU interview, understanding peripherals is critical. MCU peripherals form the bridge between a…

  • Master PCI Drivers in Linux (2026)

    Learn PCI Drivers in Linux , including PCIe architecture, BARs, device probing, interrupts, and kernel driver development. If you’re curious about how Linux talks to hardware on the PCI bus, you’re in the right place. Today we’re going to unpack PCI drivers in Linux, explain how they work, and give you hands‑on insights into writing,…